Electric headlight.



ELECTRIC HEADLIGHT.

APPLICATION mzo MAY2I. 1915.

1,206,844. Patented Dec. 5,1916.

7 /fl 7 /J '/1 j AZ /V HARRY JEFFERS HOAG, OF GLOVERSVILLE, NEW YORK.

ELECTRIC HEADLIGHT.

Specification of Letters Patent.

Patented Dec. 5, 1916.

Application filed ma 27, 1916. Serial no; 100,332.

T 0 all whom it may concern Be it known that I," HARRY J. How, a citizen of the United States, residing at Gloversville, in the county of Fulton and State of New York, have invented a new and useful Electric Headlight, of which the following is a specification.

The present invention appertains to head lights, and aims to provide a novel and improved electric head light adapted especially for use upon automobiles.

It is the object of the invention to provide a head light having main and secondary reflectors for main and secondary electric lamps, and so constructed and arranged, that when the main lamp is lighted, the light rays will be directed forwardly in the usual manner to provide a penetrating pencil or stream of light for illuminating the road ahead to a considerable distance, the secondary lamp when lighted, with the main light extinguished, throwing the rays downwardly onto the road for a short distance ahead of the machine, and thereby avoiding the blinding or glaring effect to occupants of another approaching vehicle or pedestrians.

It is also the object of the invention to provide main and secondary reflectors of the nature indicated, which can be applied to the casings of ordinary head lights, without necessitating alterations, the device being extremely simple and inexpensive in construction, and serving its office in a thoroughly efficacious manner.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, wherein:

Figure -1' is a vertical median section of the head light taken on the line 11 of Fig. 2. Fig. 2 is a front view of the head light.

In the drawing, the numeral 1 designates the parabolic casing of an ordinary electric head light, provided with the glass front plate 2.

The present attachment embodies a parabolic reflector 3 of smaller proportions than the casing 1, and provided at its closed end with a socket 4 for an incandescent electric lamp 5, a pair of conductors 6 being attached to the socket 4 and being adapted to be extended through the aperture or insulator 6 of the casing 1.

Attached to the top of the reflector 3 adjacent the mouth thereof, is a parti-spherical reflector 7 having the opening or mouth 8 above the opening or mouth of the reflector 3, the reflector 7 being of proportionately smaller size than the reflector 3 and being adapted to fit within the upper portion of the casing 1 while the reflector 3 fits within and seats upon the lower portion thereof. The reflector 7 is provided opposite the opening 8 with a socket 9 for an incandescent electric lamp 10, which may be of the same candle power as the lamp 5 if desired, and

conductors 11 attached to the socket 9 can also be extended through the aperture or insulator 6', in order that the two lamps can be connected in separate circuits to be lighted independently of one another.

It is preferable to provide the upper portion of the reflector 3 with a recess or cut out 12 to enlarge the opening 8 of the reflector 7, and a circular panel or plate 13 can be attached to the edges of the reflectors 3 and 7 to fit within the mouth of the casing 1 for holding the reflectors in place, said panel or plate 13 being cut out to accommodate the mouths of the reflectors. The upper'surface of the reflector 3 which faces the interior of the reflector 7, and the inner surface of the reflector 7, between the point 14 of the reflector 7 and the point 15 adjacent the recess 12, are blackened or otherwise treated so as not to reflect the light rays, thus preventing the light rays from the lamp 10 from eing reflected forwardly or upwardly on or above a horizontal line. The forward upper portion of the reflector 7 projects downwardly into the horizontal plane of the lamp 10, to prevent the rays of angle, to illuminate the road directly in front and a suflicient distance ahead of the automobile, in order that when the automobile is approaching another vehicle or pedestrian, the lamp 5 being extinguished, and the lamp 10 being lighted, will avoid those persons facing the approaching automobile from being blinded or confused by the glaring light, as usual. The light provided by the secondary lamp can be just as strong as the light provided by the main lamp, so that no dimming of the light isnecessary, but when the secondary lamp is lighted instead of the main lamp, the light is concentrated on the road immediately ahead of the automobile. When the main lamp 5 is lighted, the light rays are directed forwardly as usual to a considerable distance on practi-v cally a horizontal line. Neither reflector in- 'terferes with the light rays of the lamp of the other reflector, and each reflector is inthis respect independent, although the two reflectors are united in a compact and satisfactory manner. The reflectors can be placed within an ordinary lamp casing 1,

or can be used themselves as a lamp casing.

naoaeet Having thus described the invention, what is claimed as new is:

A device of the character described, comprising a main parabolic reflector, a secondary parti-spherical reflector above and secured upon the top of the main reflector adjacent to the mouth thereof, the edges of as my own, I have hereto afixed my signa- 45 ture in the presence of two witnesses.

HARRY JEFFERS HOAG.

Witnesses:

, HERBERT J. Evans,

ANNA L. Evans. 

